ALEXANDRIA, Va., May 19 -- United States Patent no. 12,631,321, issued on May 19, was assigned to Linhai Shencheng Christmas Light Factory (Linhai City, China).
"Waterproof lamp head" was invented by Longjun Jin (Linhai City, China) and Longcheng Jin (Linhai City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A waterproof lamp head, including: a lamp core holder, a lamp holder, and a light-transmitting cover. The lamp core holder is arranged with an LED lamp board; the lamp core holder is further arranged with a lead wire, an end of the lead wire passing through the lamp core holder and being connected to the LED lamp board. The lamp holder is integrally injection molded on an outer side of the lamp c...